Description

This tract contains a portion of the rim of Crater 16-003402, which rises 100m (110 yds.) over the surrounding area, then drops back 90m (98 yds.) to the crater floor.

This area is believed to consist of either extremely porous rock (for example volcanic ash) or deep layers of glacier-like ice deposits amounting to about the same quantity as is stored in Mars’ south polar cap.

Oddly, the area gives almost no radar return, therefore it has been called a “stealth” region. The area is considered to be of Amazonian age, the youngest era in martian geological history.